400–440 Airport Road, also known as River Ridge Business Center, is a multi-tenant industrial/flex business park located in Elgin's Northwest industrial corridor with excellent access to Interstate 90 via the Route 31 interchange. The property encompasses approximately 225,699 square feet across a professionally managed industrial complex and is designed to accommodate a variety of users, including manufacturing, warehousing, distribution, service contractors, and flex-office operations. The business center features masonry construction, clear heights ranging from approximately 14 to 22 feet, multiple loading positions including exterior docks and drive-in doors, and abundant on-site parking. Its strategic location between O'Hare International Airport and the Rockford logistics market provides convenient regional transportation access, making it an attractive option for businesses seeking efficient distribution and operational capabilities in the Chicago metropolitan area.